view docs/man3/SDL_GLattr.3 @ 2042:3908e1f808e1

Fixed bug #292 I might be on crack here. It looks like SDL_ConvertMono() in src/audio/SDL_audiocvt.c adds the left and right channels of a stereo stream together, and clamps the new mono channel if it would overflow. Shouldn't it be dividing by 2 to average the two sample points instead of clamping? Otherwise the mono sample point's volume doubles in the conversion. This would also make the conversion faster, as it replaces two branches per sample frame with a bitwise shift. --ryan.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 24 Sep 2006 15:56:36 +0000
parents e5bc29de3f0a
children 546f7c1eb755
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line source

.TH "SDL_GLattr" "3" "Tue 11 Sep 2001, 23:01" "SDL" "SDL API Reference" 
.SH "NAME"
SDL_GLattr\- SDL GL Attributes
.SH "ATTRIBUTES"
.TP 20
\fBSDL_GL_RED_SIZE\fP
Size of the framebuffer red component, in bits
.TP 20
\fBSDL_GL_GREEN_SIZE\fP
Size of the framebuffer green component, in bits
.TP 20
\fBSDL_GL_BLUE_SIZE\fP
Size of the framebuffer blue component, in bits
.TP 20
\fBSDL_GL_ALPHA_SIZE\fP
Size of the framebuffer alpha component, in bits
.TP 20
\fBSDL_GL_DOUBLEBUFFER\fP
0 or 1, enable or disable double buffering
.TP 20
\fBSDL_GL_BUFFER_SIZE\fP
Size of the framebuffer, in bits
.TP 20
\fBSDL_GL_DEPTH_SIZE\fP
Size of the depth buffer, in bits
.TP 20
\fBSDL_GL_STENCIL_SIZE\fP
Size of the stencil buffer, in bits
.TP 20
\fBSDL_GL_ACCUM_RED_SIZE\fP
Size of the accumulation buffer red component, in bits
.TP 20
\fBSDL_GL_ACCUM_GREEN_SIZE\fP
Size of the accumulation buffer green component, in bits
.TP 20
\fBSDL_GL_ACCUM_BLUE_SIZE\fP
Size of the accumulation buffer blue component, in bits
.TP 20
\fBSDL_GL_ACCUM_ALPHA_SIZE\fP
Size of the accumulation buffer alpha component, in bits
.SH "DESCRIPTION"
.PP
While you can set most OpenGL attributes normally, the attributes list above must be known \fIbefore\fP SDL sets the video mode\&. These attributes a set and read with \fI\fBSDL_GL_SetAttribute\fP\fR and \fI\fBSDL_GL_GetAttribute\fP\fR\&.
.SH "SEE ALSO"
.PP
\fI\fBSDL_GL_SetAttribute\fP\fR, \fI\fBSDL_GL_GetAttribute\fP\fR
...\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:01